<template>
    <el-container class="home-container">
      <!-- 头部区域 -->
      <el-header>
        <div>
          <span>电商后台管理系统</span>
        </div>
        <el-button type="info" @click="logout">退出</el-button>
      </el-header>
      <!-- 页面主体区域 -->
      <el-container>
        <!-- 侧边栏 -->
        <el-aside :width="isCollapse ? 64 + 'px' : 200 + 'px'">
          <div class="toggle-button" @click="toggleCollapse">|||</div>
          <el-menu
            :default-active="activePath"
            router
            :collapse="isCollapse"
            :collapse-transition="false"
            unique-opened
            class="el-menu-vertical-demo"
            background-color="#333744"
            text-color="#fff"
            active-text-color="#409eff">
            <!-- 一级菜单 -->
            <el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
              <template slot="title">
                <i :class="iconsObj[item.id]"></i>
                <span>{{item.authName}}</span>
              </template>
              <!-- 二级菜单 -->
              <el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
                <template slot="title">
                  <i class="el-icon-menu"></i>
                  <span>{{subItem.authName}}</span>
                </template>
              </el-menu-item>
            </el-submenu>
          </el-menu>
        </el-aside>
        <!-- 右侧内容主体 -->
        <el-main>
          <router-view></router-view>
        </el-main>
      </el-container>
    </el-container>
</template>

<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menuList: [],
      iconsObj: {
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    };
  },
  created() {
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem('activePath');
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push('/login');
    },
    async getMenuList() {
      const { data: res } = await this.$axios.get('menus');
      if (res.meta.status !== 200) return this.$message.console.error('res.meta.msg');
      this.menuList = res.data;
      // console.log(this.menuList);
    },
    toggleCollapse() {
      this.isCollapse = !this.isCollapse;
    },
    saveNavState(activePath) {
      window.sessionStorage.setItem('activePath', activePath);
      this.activePath = activePath;
    }
  }
};
</script>

<style lang="scss" scoped>
.home-container {
  height: 100%;
  .el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
    font-size: 20px;
    > div {
      display: flex;
    }
  }
  .el-aside {
    background-color: #333744;
    .toggle-button {
      background-color: #4a5064;
      font-size: 10px;
      line-height: 24px;
      color: #fff;
      text-align: center;
      letter-spacing: 0.2em;
      cursor: pointer;
    }
    .el-menu {
      border-right: none;
    }
  }
  .el-main {
    background-color: #eaedf1;
  }
  .iconfont {
    margin-right: 10px;
  }
}
</style>
